Physics Paper 2 Equations Flashcards
Work done
Force * distanced moved in the direction of the force
Power
Work done/ time
Moment of a force
Force * distance perpendicular to the force
Charge
Current * time
Energy
Charge * potential difference
Potential difference
Current * resistance
Energy
Current * potential difference * time
Power
Energy / time
Electrical power
Current * potential difference
Electrical power
Current^2 * resistance
Force on conductor carrying current at right angles to the magnetic field
Magnetic field strength * current * length
Right hand rule
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The thumb is direction of current
The fingers are direction of magnetic field
Flemmings left hand rule
👍🏿👈🏾🖕
Thumb is for force
Index Finger is for magnetic field
Middle finger is for current
Potential difference across primary coil
——————————————————
Potential difference across secondary coil
Number of coils in primary coil
——————————————
Number of coils in secondary coil
Potential difference across primary coil *
Current in primary coil
Potential difference across secondary coil *
Current in secondary coil
Density
Mass / volume
Change in thermal energy
Mass * specific heat capacity * change in temperature
Thermal energy needed for a change of state
Mass * specific latent heat
Kelvin
Degrees- 273
Degrees
Kelvin + 273
Starting pressure * starting volume
Finishing pressure * finishing volume
Force
Spring constant * extension
Energy transferred in stretching
0.5 * spring constant * extension ^2
Pressure
Force / area
